Carbureter.



No. 684,608. Patented Oct. l5, I90l.

A. P. HAWN.

GARBURETEB.

(Applicatiqn filed Nov. 30, 1900.)

(No Model.)

UNITED STATES PATENT OFFICE.

ANDREW P. HAI/VN, OF GOODLAND, INDIANA, ASSIGNOR TO A. BRINGHAM & (30., OF CHICAGO, ILLINOIS.

CARBURETER.

SPECIFICATION forming part of Letters Patent No. 684,608, dated October 15, 1901.

Application filed November 30, 1900- Serial No- 38,237. (No model.)

To all whom, it may concern.-

Be it known that 1, ANDREW P. HAWN, of Goodland, in the county of Newton and State of Indiana, have invented a new, useful, and Improved Carbureter, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in which similar letters of reference in both figures indicate corresponding parts.

The object of my invention is to so construct a generating apparatus for generating gas for illuminating and other purposes from naphtha or other hydrocarbon oils that the same may without the use of controllingvalves or other analogous mechanism act automatically to supply to the generator such quantity of naphtha as may be necessary to generate the volume of gas required to supply the burners in use at any given time, whether one or more, and to maintain a uniform pressure at said burners.

To these ends my invention consists in providing a tank or other source of naphtha-supply under pressure in communication with a generator, one or more distributing-pipes in communication with the burners,and an auxiliary gas-receiver so connected with thegenorator-tank and distributing-pipes, respectively, that the pressure of the gas in the gasreceiver may, as it increases or diminishes through the use of gas at the burners, serve to increase or diminish the quantity of napha tha admitted to the generator by raising or lowering its level therein, thus automatically varying the quantity of gas generated according to the amount used at the burners while maintaining a constant and uniform pressure at said burners, all of which is hereinafter more particularly described and claimed.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of an apparatus embodying the features of my invention; and Fig. 2 is a like view showing a modified construction.

Referring to said drawings, a, Fig. 2, represents a gasolene-supply tank, which is preferably connected, by means of a pipe I), with an air-pump or other source of air-pressure, while a supply-pipe 0 leads from the tank to a suitable gas generator or retort. In Fig. 1

the supply-tank is not shown; but it is obvious that the supply-pipe a may lead to a supply-tank in which pressure may be maintained either by means of an air-pu mp or by gravity in the usual way. In the figure last named the supply-pipe 0 leads directly to the bottom of a vertically-arranged cylindrical reservoir d, which is surrounded near the bottom by an annular burner e, fitted closely thereto and having burner-openingsf in the top for the escape of gas. A ring-shaped generator g also surrounds the part (Z, being located directly above the burner. Both gen erator and burner are protected by means of an overhanging metal hood h, which is open at the bottom. A pipe t'is extended from the top of the cylindrical reservoir (1 to the generator g. Leading outwardly from the generator g is a pipe j, upon the outer end of whichds secured a fitting 70, provided with the usual needle-valve Z, the counterparts of which are shown in sectionin Fig. 2 and correspondingly lettered. Beneathsaid needlevalve is an upwardly-bent tube m, open at the top, said tube being arranged to communicate with the burner 6, while preferably opposite thereto is a pipe n, leading from the generator 9 to a fitting 0, having an upwardlydirected needle-valve 12 located beneath the open mouth of a gas-distributing pipe q, having a suitable deflecting-plate r of any wellknown construction at'the bottom, so that an inflow of air may be induced, as hereinafter stated.

I prefer to provide a secondary receiver 8 for the reception of gas, the bottom of which is connected with the service-pipe c by means of a pipe i, while the top or some other portion thereof is connected with the reservoir d by means of a pipe a.

The operation of my improved device is as follows: Gasolene or other volatile hydrocarbon oil is forced through the service-pipe 0 into the bottom of the reservoir d. Heat is then applied in any well-known way to the generator g until vapor is generated therein, when the valve Z is opened, which causes a flow of vapor to the burner. The vapor being lighted, the flame continues to heat the generator until a supply of gas accumulates in both the receivers (Z and s. The valve 1) being opened, the gas is caused to flow into the distributing-pipe q. Should there be an insufficient number of burners in use to consume the gas generated, the pressure in the reservoirs d 3 increases, thereby forcing back the supply of naphtha and lowering its level in the bottom of the reservoir 01 until only a sufficient amount is present to supply the requisite demand at the required pressure. I have found in actual practice that this ac tion is automatic and that the apparatus is self-regulating to a degree. Should a number of burners be shut ofi, the back pressure of the gas within the gas or pressure reservoir or reservoirs acts at once to lessen the supply of naphtha at the generator, while the pressure upon the other burners remains unchanged.

While I prefer to use the reservoir 8, it is obvious that it may be dispensed with without Varying the principle involved, in which case the supply-pipe 0 may be carried directly to the bottom of the reservoir 01, as indicated in dotted lines, (shown at c, Fig. 1,) in which case I prefer to make said reservoir higher than it would be were it supplemented by the reservoir 3, the object of which latter .is merely to increase the volume of gas so stored.

In Fig. 2 I have shown a modification of said invention without in any way departing from the principle involved. In that construction the pipe 0 leads directly to the bottomof a reservoir (1, having an opening 0 in the bottom thereof, upon which reservoir is superimposed a larger reservoir (1 having an opening 01'' in the bottom, through which coinmunication is established with the reservoir d. A pipe 1), having a coil w therein, is extended laterally from the bottom of the reservoir d and thence afterbeing coiled, as shown, upwardly to the bottom of the reservoird the coil to serving as a generator. The pipej is led from the top of the reservoir (Z to the fitting 70, having the needle-valve Z. Beneath the valve-opening is placed apipe as, communicating at the bottom with a burner 00', located beneath the generating-coil w. A pipe 3 preferably coiled at 2 above the burner, is led from the bottom of the reservoir d to the valve-fitting 0 beneath the distributing-pipe q. The tank a being subjected to air-pressure, the naphtha is caused to rise into the reservoir d, the normal level being substantially as shown. When in operation, the gas is generated in the pressure-regulating tank d from whence it passes through the pipe onto the burner, the flame from which heats the generator. The pressure in the apparat us is obviousl yself-regulatin g, precisely as in that shown in Fig. l, causing the amount of gas generated to conform to the demand therefor at the burners by causing the level of the naphtha in the generator to be raised or lowered as a result of variation in pressure in the reservoir (1 thereby maintaining a constant pressure at the burners. An advantage of this construction is that the burner is placed directly beneath the gas-reservoir, which serves to maintain the gas therein in a heated state.

Having thus described my invention, I claim- 1. In an apparatus of the'class described, the combination of a gas-generator, a source of oil-supply under pressure, means for heating said generator, an enlarged gas-receiver in communication both with said generator and said source of oil-supply, and a gas-delivery pipe in communication with said gasreceiver, whereby the volume of gas within said enlarged receiver may serve as an elastic cushion to regulate the oil supply at the burner and to impart a uniform pressure within the delivery-pipe, substantially as specified.

2. In an apparatus of the class described, a source of oil-supply under pressure, a generator in operative communication therewith, means for heating said generator, an enlarged gas-receiver having a capacity for holding a volume of gas in excess of the maximum demand thereon, said receiver being in communication with the generator-burner and a source of oil-supply respectively, and a gasdelivery pipe in communication with said enlarged gas-receiver, substantially as described.

3. In an apparatus of the class described, a source of oil-supply, a generator or retort in operative communication therewith, a supplemental gas-receiverin communication with the generator and source of oil-supply respectively, a gas-delivery pipe in communication with said gas-receiver, and a pipe and burner for supplying a subfiame to the generator, the whole being closed from the outer atmosphere except at the gas-delivery opening, substantially as described.

4. The combination with an oil-supply tank and means for producing pressure therein, of a gas-generator, a gas-delivery pipe, means for heating said generator, and an interposed gas-receiver arranged to produce a back pressure of gas upon the retort proportioned to the demand at the burners, said gas-receiver being located in operative proximity to the subflanie of the generator, and a conduit leading from said receiver into contact with the subfiame before final delivery to the service-pipe; whereby the gas from the receiver may be superheated, substantially as described.

In testimony whereof I have signed this specification, in the presence of two subscribing witnesses, this 23d day of November, 1900.

ANDREYV P. HAWN.

\Vitnesses:

D. II. FLETCHER, CHARLES L. HINE. 

